Box of cards:

Extra information

Reader reviews

EXCELLENT!There are lots of optical illusions to try out in this amazing little pack! I like all of them so much I can't tell you which is my favourite.Emily, 19th April 2014

AWESOME!I have these and they are perfect for my science fair project with my partner, they give you the answer as to why this illusion bothers the human mind and our scientific question is how do optical illusions influence the brain.ScienceFairGal, 3rd January 2011